Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem é a escola, clube, equipe ou país para o qual os Rockets jogaram em 1967-68?
 ###Tabelas: CREATE TABLE season_2_1997–98 (season_2_1997–98_id AUTO_INCREMENT PRIMARY KEY, Series # INT, Season # INT, Title VARCHAR, Directed by VARCHAR, Written by VARCHAR, Original air date VARCHAR) CREATE TABLE season_three_2011 (season_three_2011_id AUTO_INCREMENT PRIMARY KEY, Series # INT, Episode # INT, Title VARCHAR, Written by VARCHAR, Directed by VARCHAR, Viewers INT, Original airdate VARCHAR) CREATE TABLE list_of_contestants (list_of_contestants_id AUTO_INCREMENT PRIMARY KEY, Celebrity VARCHAR, Known for VARCHAR, Age INT, Professional VARCHAR, Series INT, Place VARCHAR, Dances INT, Highest score INT, Lowest score INT, Aggregate INT, Average VARCHAR) CREATE TABLE a (a_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, No.(s) VARCHAR, Height in Ft. VARCHAR, Position VARCHAR, Years for Rockets VARCHAR, School/Club Team/Country VARCHAR) CREATE TABLE promotion_playoff (promotion_playoff_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Played INT, Points INT, Wins INT, Draws INT, Losses INT, Goals for INT, Goals against INT, Goal Difference INT)  
SELECT School/Club Team/Country FROM a WHERE Years for Rockets = 1967-68